Question

Design a motor controller that has forward and reverse buttons. The motor's forward and reverse outputs will only be ON when one of the buttons is pushed.

Answer 1

To design a motor controller with forward and reverse buttons, you can use a simple circuit based on relays or transistors.

Step-by-step explanation:

To design a motor controller with forward and reverse buttons, you can use a simple circuit based on relays or transistors. Here's an example of a circuit using relays:

1. Connect the forward button to the coil of a relay and the common contact of the relay to the motor's forward input.
2. Connect the reverse button to the coil of another relay and the common contact of this relay to the motor's reverse input.
3. Connect the normally open (NO) contact of the forward relay in series with the normally closed (NC) contact of the reverse relay to the positive supply voltage.
4. Connect the NO contact of the reverse relay in series with the NC contact of the forward relay to the negative supply voltage.

When the forward button is pressed, the forward relay gets energized, closing its NO contact and allowing current to flow through the motor in the forward direction. When the reverse button is pressed, the reverse relay gets energized, closing its NO contact and allowing current to flow through the motor in the reverse direction. In both cases, the contacts of the other relay open, preventing current from flowing in the opposite direction. This way, the motor's forward and reverse outputs will only be ON when one of the buttons is pushed.